Excavator



(No Model.) v I 2 Sheets-Sheet 1.,

M. E. PUGH;

BXGAVATOR.

No. 498,364. Patented May 30,1893.

j WITNESSES: i

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ATTORNEY.

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(No Model.) Q V 2 Sheets-Sheet, 2.

' M. E. PUGH..

BXGAVATOR. I I No. 498,364. PatentedMay 30,1893.

- I ATM/HEY.

' and exact description of the invention, which ing cable can be quickly and easily adjusted flower, in the county of Coahoma and State NITED STATES MORTON E. PUGH, SUNFLOWER, MISSISSIPPI.

EXCAVATO R.

SPECIFICATION forming part of Letters Patent No. 498,364, dated May 30, 1893.

Application filed July 7, 1891. Renewed November 3, 1892- Serial No. 450| -l To all whom it may concern:

Be it known that LMORTONE. PUGH, of Sunof Mississippi,have invented certain new and useful Improvements in Excavators; and I do hereby declare that the following is a full, clear,

will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference markedthereon, which form part of this specification.

This inventionrela'tes to certain improvements in excavating apparatus and more particularly to improvements on my former patent No. 379,722, dated March 20, 1888, and having relation to an excavating apparatus comprising an endless traveling cable, having operating means, and to Whichthe digging or excavating implements are detachably secured and by which they are drawn;

The object of this invention is to provide improved means whereby the endless operatand' moved laterally or horizontally without stopping the motion of the cable. This object is accomplished by, and this invention consists in, certain novel'features of construction and in combinations of parts more fully described hereinafter and particularly pointed out in the claims.

Referring to the accompanying drawings:- Figure 1, is a plan View, showing theoperatin g or driving cable and the supporting and adjusting frames thereof. Fig. 2, is an end view of one of said frames with parts broken away. Figs. 3, and 4, are views of details.

In the drawings reference letter a, indicates an endless operating cable. This cable is so mounted and arranged thatit will travel above the surface of the earth which is tobe operated upon. As set forth in my before-mentionedpatent, the digging or excavating implements a are detachably secured to this cable and are drawn thereby across the portion of the earthto be excavated and to the place where the earth is'to be deposited. Of course, as the work progresses, the cable has to be shifted to different positions. The object of my present invention is to provide imried by the truck andconnected with suitable driving 'means,not here shown- The cable is held in engagement with an extended portion of the periphery of this driving pulley by means of- .the two idler pulleys d, carried by arms 6, from the truck and holding the cable upon the driving pulley; as shown in Fig; 1.

At every point where it desired to have the operating cable change its direction, a pulley f, is provided, around which the cable passes; the cable, preferably, being so arranged as to have four corners or turns, although, of course, it can be arranged in any suitable manner other than to make four corners. Each corner guide pulley is carried by a suitable I elevated frame-work comprising supporting beams g, braced and strengthened in any suit- 1 able manner and the two horizontal guide beams or tracks 71.,locatedv a suitable distance apart and extending in the direction in which it isdesired to cause the line of excavation to proceed. Each guide pulley f, is carried by an arm 2', extending horizontally between said guide beams h and carried by the two rollers j, traveling on the outer sides of the track beams h. The said armt', is mounted on the axle of the two rollers j, and has the joint 10 between the rollers j, and pulley f, to permit vertical movement of said pulley. The inner end of one of the sections of arm '5, has a vertical series of horizontal apertures k", and

the inner end of the opposite section has one aperture to separately register with said aper tures of the series It, as it is raised and low-' ing means are provided foreach corner pulley. The corner frames are preferably arously.

ranged in pairs, as shown, with the track beams of each pair extending in the same direction.

Of course, the frame supporting the parts can be greatly varied in construction, particularly when made of iron.

In order to always keep the cable taut and to be able to move it horizontally while continuing to operate, the two guide pulleys at consecutive corners on the same side of the excavation are arranged to move simultane- In order to accomplish this, the outer ends of the two frames are provided with stationary mounted pulleys l, in substantially the same planes with the operating cable guide pulleys; and an adjusting cable a, is provided. At one end, it is secured to the arm 0, from the movable frame 1', of one of the guide pulleys; and, passing around the pulley Z, of the supporting frame thereof, and thence extending to and around the stationary mounted pulley Z, on the opposite supporting frame. At its opposite end it is secured to a corresponding arm 0, of the opposite guide pulley; so that, when the guide pulley at one end is moved toward the right, the guide pulley at the other corner will be cor: respondingly moved toward the right. The adjusting cable is operated by suitable means to move the guide pulleys toward the right or left; such means, preferably, consisting of the horizontal worm Wheel 1), rigid with the shaft of one of the guide pulleys for the adjustable cable, and the worm q, meshing with said worm wheel and provided with a suitable handle q or other rotating means, whereby the operator can easily move the adjusting cable. Ordinarily, four guide pulleys are provided for the operating cable and are arranged and connected in two pairs, as shown.

The many and great advantages of this construction are obvious. The traveling cable can-be quickly and easily adjusted horizoutally.

It is evident that various changes might be made and resorted to in the form, arrangements and constructions of the parts herein described, without departing from the spirit and scope of my invention. wish to limit myself to the peculiar construction herein set forth.

What I claim is 1; In an excavating apparatus, the combination of the endless operating table, the horizontal guide pulleys therefor, adjustable horizontally independently of the drive wheel to shift the cable while moving the truck or vehicle, the large horizontal drive wheel for said cable mounted on such truck or vehicle, and the two idler pulleys located on the opposite sides of said drive pulley and holding the operating cable in contact with an extended portion of the periphery of said drive pulley, substantially as described.

2. The combination with the endless operating cable, guide pulleys therefor, movable frames for such guide pulleys provided with Hence, I do not rollers, horizontal guides for each movable frame upon which the rollers travel, supporting frames carrying such guides, and an adjusting cable connecting said movable frames so that they move together horizontally, and means, substantially as described, to move the adjusting cable to horizontally shift the said guide pulleys and the operating cable.

3. The combination with the endless operating cable, operating means therefor, two guide pulleys for such cable, movable frames provided with rollers and carrying such guide pulleys, horizontally arranged track rails for each movable frame upon which the rollers thereof travel, supporting frames therefor,

and an adjustable cable connecting said two movable frames so as to move the two guide pulleys simultaneously in the same direction, and worm gearing and a pulley to operatesaid adjusting cable, substantially as set forth. 4. The combination with the operating cable, a horizontal guide pulley therefor, an upright frame, a pair of separate parallel horizontal tracks carried by such frame, a horizontal frame to each guide, pulleyextended between said two guide tracks and provided with a pair of rollers on its outerend traveling on said tracks, said horizontal frame having a joint so arranged that the guide pulleys can swing vertically, substantially as set forth. 5. The excavating apparatus consistingof the endless operating cable, the horizontally rotating drive wheel mounted on a vertical,

axis, the corner guide pulleys, horizontally adjustable carriers for said pulleys, and stationary supports for said carriers on which the same are adjusted, and gearing and connections connecting the corner pulleys in pairs so that each pair of corner pulleys can head justed together independently of the drive pulley and while the cable is traveling,substantially as described.

6. An excavatingapparatus consisting of the endless operating cable, the horizontally rotating drive pulley mounted on a vertical axis, means for holding the cable in contact with a portion only of said pulley, the corner guide pulleys having horizontally movable carriers, supports for said carriers, means substantially as described wherebysaid carriers can be adjusted to horizontally shift the cor, ner pulleys and cable, and whereby said corner pulleys are held in the desired position.

7. In an excavating apparatus, the endless operating cable, corner guide pulleys there for provided with suitable supports, the horizontallyrotating drive pulley mounted 011 a vertical axis, and means substantially as described for holding said cable in contact with a portion of the peripheryof said pulley, substantially as described.

8. An excavating apparatus consisting of the operating cable and driving means therefor, corner guide pulleys for said cable, horizontally adjustable carriers for said pulleys, horizontally elongated supporting frames for said carriers, and gearing and connections IIO connected to each supporting frame and the carrier thereon to horizontally adjust the carrier on the frame and hold the same in the desired position, substantially as described.

9. In an excavating apparatus, the combination of the operating cable and means for actuating the same, corner guide pulleys forsaid cable, carriers for said pulleys, horizontally elongated stationary supporting frames for said carriers on which the carriers are horizontally adjustable in parallel directions, said carriers being connected in pairs and arranged to move together in the same direction, and means substantially as described for holding the carriers in the desired adj ustment and for adjusting the same, as and for the purposes set forth.

10. In an excavating apparatus, the combination of the operating cable, corner guides, carriers therefor, the stationary supporting frames having horizontally elongated parallel tracks, said carriers being confined and horizontally adjustable on said tracks, an adjusting cable connecting each pair of carriers and moving the same together in the same di-v rection, and means for holding the carriers in the desired adjustment substantially as described. t

11. In an excavating apparatus the combination of the operating cable, the corner guide pulleys, the stationary supporting, frames,-

' witnesses.

MORTON E. PUGH.

Witnesses:

JOHN O. BAUGH, W. R. STEWART. 

